Remathilis
Legend
Let me discuss a little thing called aesthetics.But getting rid of ability scores in favor of just modifiers is too big of a change?
Ever look at things that are clearly D&D inspired but not actually D&D? I'm not talking any games, but merchandise or memes that references the game indirectly (a baby romper with an 18 Charisma score, a 9 panel meme about coffee alignment, or a bumper sticker that says "Jesus saves... And takes half damage"). That is part of the aesthetics of the game. Are ability scores of 18 integral to your game mechanics? No, they are increasingly useless. But they are a part of the aesthetic of D&D that a casual reference to a baby having an 18 Cha (because it's adorable and everyone loves them) is so ubiquitous that even non players get the reference. 18 = Good/best has seeped into the collective consciousness in a way that "rogues getting their second subclass feature at 9th level" hass not.
Which is part of the reason that someone people had deeper reservations about 4e's changes, despite some of them being objectively improved ideas. 7th level encounter powers might make much more mechanical sense than 3rd level spell, but the latter is a defining part of D&D's aesthetic that it feels wrong to not say it.
So there are some things I feel the game can't (yet?) walk away from without losing it's aesthetics. Alignment. Ability scores 3-18, +X weapons, saving throws as active defense. Spell slots 1-9 levels, class/species divide, hit points, etc.
Take away too much of that aesthetic and it ceases to be D&D, even if the replacement is objectively better.